All I know is if you do go that route, make sure the cameras have glass lenses!
I installed a backup camera(not all around) on a prior vehicle and it didn't last even 2 years before the lens clouded over :x what a total waste, took quite a bit of work to install it and within 2 years it was so cloudy I couldn't see out of it. We've had much better luck with our factory Prius lens, it's almost 10 years old and not a cloud, must be glass...I can't believe having a glass lens adds more than a couple dollars to the cost of the camera and to not do this on a product costing several hundred dollars in unforgivable IMO! New they probably all look the same, only time will tell.